Defensive publication

ABSTRACT

DISCLOSED IS A PROCESS FOR PREPARING FIRE-RETARDANT POLYESTER FIBERS COMPRISING CONTACTING, AT A TEMPERATURE IN THE RANGE OF 350* TO 410*F., FOR A PERIOD OF TIME IN THE RANGE OF 15 TO 90 SECONDS A POLYESTER FIBER, A DISPERSE DYE, AND AN ORGANIC BROMINE COMPOUND OF AT LEAST 6 CARBON ATOMS THAT DOES NOT CHEMICALLY REACT WITH THE POLYESTER, THE ORGANIC BROMINE COMPOUND CONTAINING, BASED ON THE WEIGHT OF THE ORGANIC BROMINE COMPOUND, FROM ABOUT 40 TO ABOUT 85 WEIGHT PERCENT BROMINE. POLY(ETHYLENE TEREPHTHALATE) AND POLY(1,4-CYCLOHEXYLENEDIMETHYLENE TEREPHTHALATE) FIBERS AND PARTICULARLY DESIRABLE POLYESTER FIBERS. TRIS(2,3DIBROMOPROPYL) PHOSPHATE IS A PARTICULARLY DESIRABLE ORGANIC BROMINE COMPOUND.

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request oi. the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages ot specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits or alleged invention. The Patent Ofllce makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED NOVEMBER 27, 1973 T916,008 METHOD FOR PREPARING FlRE-RETARDANT POLYESTER FIBERS Allan R. Rothwell, Rte. 8, Lonesome Pine Road, and

Gary L. Bond, Rte. 10, Country Joy Apartments, Apt.

5, both of Kingsport, Tenn. 37664 Filed Apr. 6, 1973, Ser. No. 348,547 Int. Cl. D06p 5/00; C09k 3/28 U.S. Cl. 8-17 No Drawing. 8 Pages Specification Disclosed is a process for preparing fire-retardant polyester fibers comprising contacting, at a temperature in the range of 350 to 410 F., for a period of time in the range of 15 to 90 seconds a polyester fiber, a disperse dye, and an organic bromine compound of at least 6 carbon atoms that does not chemically react with the polyester, the organic bromine compound containing, based on the weight of the organic bromine compound, from about 40 to about 85 weight percent bromine. Poly(ethylene terephthalate) and poly(l,4-cyclohexylenedimethylene terephthalate) fibets are particularly desirable polyester fibers. Tris(2,3- dibromopropyl) phosphate is a particularly desirable organic bromine compound. 

